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Arturiano [62]
3 years ago
14

What is cosine ? I really need this answer for my test tomorrow. Please help

Mathematics
2 answers:
stiv31 [10]3 years ago
4 0
Cosine is one of the three part for trigonometry. 

You have sin, cos, and tan. 

You can easily do this by understanding SOH CAH TOA. 

Sin = OPPO. over HYPOTENUSE
Cos = ADJACENT over HYPOTENUSE
Tan = OPPO. over ADJACENT 

I hope this helps!

Kisachek [45]3 years ago
3 0
Cosine is \frac{adjacent}{hypotenuse} which applies to a right triangle. I hope that helps you.
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Fiona spent $13.70 to travel across the city in a taxi. It cost her $3.25 to get the taxi and $2.75 each mile she traveled. Writ
Goryan [66]
2.75m+3.25=13.70


2.75m=13.70-3.25\\\\2.75m=10.45\ \ \ /:2.75\\\\m=\frac{10.45}{2.75}\\\\m=\frac{1045}{275}\\\\m=3.8\ (miles)
8 0
3 years ago
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A new restaurant is attracting customers with searchlights has a radius of 2 feet. What is the searchlights circumference?
Assoli18 [71]

Answer:

12.56 feet

Step-by-step explanation:

The perimeter of a shape is the sum of all its side.

Since circle doesn't have "sides", the perimeter is the length of the whole circle. This has the name "circumference".

The circumference of a circle has the formula:

C=2\pi r

Where

C is the circumference (perimeter of a circle)

r is the radius

Given,

r = 2 feet

We substitute and find the circumference, using 3.14 as \pi,

C=2\pi r\\C=2(3.14) (2)\\C=12.56

Hence, the circumference is 12.56 feet

5 0
3 years ago
(-98.6) divided by (3.8)
Wewaii [24]
The answer is: -25.9
6 0
3 years ago
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A scale on a map shows that 2.52.52, point, 5 centimeters represents 151515 kilometers.
Dmitry_Shevchenko [17]

Answer:

  105 km

Step-by-step explanation:

Written as a proportion, the ratio of km to cm will be the same for both distances:

  (x km)/(17.5 cm) = (15 km)/(2.5 cm)

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105 actual kilometers are represented by 17.5 cm on the map.

5 0
3 years ago
2^8+6(7-1)+4 does this equal 56
sukhopar [10]

Answer:

nope

Step-by-step explanation:

it acutally equals to 292 I am sure!

7 0
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